Function PQcancel

src/interfaces/libpq/fe-connect.c:4728–4739

* PQcancel: request query cancel * * Returns true if able to send the cancel request, false if not. * * On failure, an error message is stored in *errbuf, which must be of size * errbufsize (recommended size is 256 bytes). *errbuf is not changed on * success return. */

 * success return.
 */
int
PQcancel(PGcancel *cancel, char *errbuf, int errbufsize)
{
	if (!cancel)
	{
		strlcpy(errbuf, "PQcancel() -- no cancel object supplied", errbufsize);
		return false;
	}

	return internal_cancel(&cancel->raddr, cancel->be_pid, cancel->be_key,
						   errbuf, errbufsize, false);
}

/*
 * PQrequestFinish: request query finish